The amount of prescribed medications and the number of individuals taking them are increasing rapidly. The share of Americans taking one or more prescription drugs has risen among all age groups. According to the IMS Health Study, the total spending on prescription drugs in the U.S. reached $310 billion in 2015. This is almost three times more than total drug expenditures in the year 2000. It is forecasted that the U.S. spending on medicine will reach $370 to $400 billion in 2020. Moreover, several drug makers have notably increased their drug prices in recent years.